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An electric battery is a device consisting of one or more electrochemical cells that convert stored chemical energy into electrical energy. Connected a battery's negative to another's positive is a way to increase voltage, useful when a battery outputs low voltage.

0 votes
0 answers
621 views

Can I use Li-ion in series to power a 12V motor?

My main constraint is weight, and from the research I have done so far it looks like Li-ion batteries have the highest energy/mass ratio, so this would potentially be the best option for getting the most …
sak's user avatar
  • 153
2 votes
3 answers
627 views

How can I build a power bank which charges to 16.8 V and outputs 12 V?

I am working on a battery pack building project to drive a small 12 V electric motor (7 A max. current draw), and I have gotten this far: I will use Li-ion 18650 cells in a 6P4S configuration; I will …
sak's user avatar
  • 153
0 votes
2 answers
430 views

How do I calculate the discharge time of a battery with a step-down converter?

I'm building a battery to drive a small 12V motor which is rated to draw max 7A. The battery has the following stats: Nominal voltage: 14.4V Capacity: 20.4Ah So I calculated that the energy should b …
sak's user avatar
  • 153